add error-checking to DrRacket files
clarify wording for OoO Triangle
Some explanation of make_game, as suggested by Mark Merker, Amit Lissack and Dan Wiesenthal
some additional cleanup in teachpacks, including replacing all uses of setbang with box and unbox. This allows for greater source parity with WeScheme version of the teachpacks
Merge branch 'newformat' of github.com:bootstrapworld/curr into newformat
fixed bs1 source files
Merge branch 'master' into newformat
extended build to zip source files in newformat